.big {
    width: 100%;
    height: 100%;
    background-color: #f3f5f7;
}

.header {
    width: 100%;
    background-color: #fff;
}

header {
    height: 84px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header>ul {
    height: 84px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.headLog {
    width: 140px;
    height: 84px;
}

header>ul:nth-child(1)>li:not(:nth-child(1)),
header>ul:nth-child(2)>li:not(:nth-child(1)){
    height: 84px;
    display: flex;
    align-items: center;
    padding: 0 15px;
    cursor: pointer;
    position: relative;
}

header>ul:nth-child(1)>li:not(:nth-child(1)):hover,
header>ul:nth-child(2)>li:not(:nth-child(1)):hover,
.navActive {
    background-color: #f8f8f8;
}

.teacherpullBox,
.userpullBox {
    position: absolute;
    z-index: 1000;
    top: 100%;
    min-width: 160px;
    background-color: #fff;
    word-break: break-all;
    text-align: left;
    display: none;
}

.teacherpullBox>li {
    padding: 8px 20px;
    border-bottom: 1px solid #ccc;
}

.userpullBox>li {
    display: block;
    padding: 8px 20px;
    border-bottom: 1px solid #ccc;
} 

.teacherpullBox>li:hover {
    background-color: #f8f8f8;
    color: #30a4ff;
}

.userpullBox>li:hover {
    background-color: #f8f8f8;
    color: #30a4ff;
}

header>ul:nth-child(2)>li:nth-child(1) {
    position: relative;
}

header>ul:nth-child(2)>li:nth-child(1)>i {
    position: absolute;
    top: 12px;
    right: 15px;
    font-weight: bold;
    color: #6b7076;
}

header>ul:nth-child(2)>li:nth-child(1)>input {
    width: 170px;
    height: 41px;
    border: 1px solid #000;
    border-radius: 41px;
    text-indent: 20px;
    outline: none;
}

header>ul:nth-child(2)>li:nth-child(2)>i {
    font-size: 20px;
}

header>ul:nth-child(2)>li {
    display: flex;
    align-items: center;
}

.icon-sanjiaodown {
    font-size: 10px;
    position: relative;
    top: 0;
    left: 2px;
}

.containerImg {
    width: 100%;
    height: 430px;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.goLeft,
.goRight {
    position: absolute;
    font-size: 55px;
    font-weight: bold;
    color: #fff;
    opacity: 0.7;
    top: 40%;
    cursor: pointer;
}

.goLeft {
    left: 10%;
}

.goRight {
    right: 10%;
}

.lunboBottom {
    display: flex;
    position: absolute;
    bottom: 25px;
    align-self: center;
    width: 250px;
    display: flex;
    justify-content: space-between;
}

.lunboBottom>li {
    width: 50px;
    height: 4px;
    border-radius: 4px;
    background-color: #fff;
    opacity: 0.3;
}

.lunboBottom .lunboBottomActive {
    opacity: 0.8;
}

.imgItems {
    display: flex;
    height: 100%;
}

.imgItem {
    height: 100%;
}

.imgItem>img {
    width: 100%;
    height: 100%;
}

section {
    margin: 0 auto;
    overflow: hidden;
}

.online {
    height: 356px;
    margin-top: 30px;
}

.titleTop>ul {
    display: flex;
}

.titleTop>ul>li {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0 20px 20px 20px;
    border-bottom: 3px solid transparent;
}

.titleTop>ul>li>img {
    width: 17px;
    height: 20px;
    margin-left: 4px;
}

.titleTop>ul>.onlineTitleActive {
    border-color:  #30a4ff;
    color: #30a4ff;
}

.onlineMain {
    margin-top: 30px;
    height: 261px;
    overflow: hidden;
}

.onlineMain>div {
    display: flex;
}   

.onlineMain>div>div {
    width: 270px;
    height: 261px;
    margin: 0 15px;
    box-shadow: 0 3px 7px 0 rgba(0,0,0,.09);
    background-color: #fff;
}

.onlineTu {
    position: relative;
    width: 270px;
    height: 151px;
}

.onlineTu>img {
    width: 100%;
    height: 100%;
}

.onlineTu>span {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(75,85,95,.6);
    color: #fff;
    border-radius: 25px;
    display: inline-block;
    line-height: 22px;
    padding: 1px 10px;
    font-size: 12px;
}

.caption {
    padding: 15px 9px 9px;
    color: #333;
}

.captionMain {
    height: 48px;
    line-height: 24px;
}

.captionBo {
    margin: 10px 0 5px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.masterItem {
    box-sizing: border-box;
    width: 25%;
    padding: 0 15px;
}

.masterItem>div {
    height: 253px;
    background-color: #fff;
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: 0 3px 7px 0 rgba(0,0,0,.09);
}

.masterItem>div:hover {
    box-shadow: 0 7px 10px 7px rgba(7,17,27,0.1);
}

.manTu {
    margin-top: 20px;
}

.manTu>dt>img {
    width: 100px;
    height: 100px;
    border-radius: 100%;
    margin-bottom: 5px;
}

.production {
    margin: 20px 0 10px;
    height: 48px;
    line-height: 24px;
    overflow: hidden;
    white-space: normal;
    word-wrap: break-word;
    word-break: break-all;
}

.suggestTitle {
    font-size: 16px;
    color: #333333;
    margin-top: 10px;
    height: 30px;
    line-height: 30px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.suggestItem:hover {
    cursor: pointer;
}

.suggestItem>div {
    height: 341px;
}

.book {
    display: block;
    width: 134px;
    height: 200px;
    margin-right: auto;
    margin-left: auto;
    max-width: 100%;
    height: auto;
}

.more:hover.more>span,
.more:hover.more>i{
    cursor: pointer;
    color: #30a4ff;
}

.industryMain {
    display: flex;
    justify-content: space-between;
}

.industryLeft {
    width: 47%;
    height: 310px;
    position: relative;
}

.industryLeft>img {
    width: 100%;
    height: 100%;
}

.industryLeft>span {
    color: #fff;
    max-height: 52px;
    min-height: 26px;
    padding: 15px 17px;
    overflow: hidden;
    line-height: 26px;
    font-size: 20px;
    background: linear-gradient(to bottom,rgba(0,0,0,0) 12%,rgba(0,0,0,0.7) 100%);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.industryRight {
    width: 51%;
}

.industryRight>li {
    height: 90px;
    margin-bottom: 20px;
    display: flex;
}

.industryRight>li>img {
    padding-right: 10px;
    width: 157px;
    height: 90px;
}

.industryRight i {
    font-style: inherit;
}

.industryRight>li:last-child {
    margin: 0;
}

footer {
    width: 100%;
    margin-top: 40px;
    height: 305px;
    background-color: #2e3036;
    padding: 50px 0 30px;
}

.footerContainer {
    margin: 0 auto;
}

.footer1 {
    display: flex;
    width: 100%;
    height: 127px;
}

.footer1>div {
    flex: 1;
}

.footer1>div>ul>li:not(:nth-child(1)) {
    margin-bottom: 10px;
}

.footer1>div>ul>li:not(:nth-child(1)):hover {
    color: #a1a1a1c9;
    cursor: pointer;
}

.footer1>div:last-child>h6 {
    display: flex;
    align-items: center;
}

.footer1>div:last-child {
    display: flex;
}

.footer1>div:last-child>div:last-child {
    align-self: center;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
}

.footer1>div:last-child>div:last-child>div {
    border-color: #666;
    width: 158px;
    height: 36px;
    border: 1px solid #666666;
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer2 {
    border-bottom: 1px solid #3c3c3c;
    line-height: 50px;
}

.footLis>span {
    font-size: 12px;
    display: inline-block;
    color: #666;
    padding: 0 10px;
    vertical-align: middle;
    margin: 0 5px;
}

.footLis>i {
    font-style: inherit;
    font-size: 10px;
}

.footerContainer>ul>li>a {
    color: #666666;
}

.dis_none {
    display: none;
}

.logout-wp{
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.logout-box{
    position: fixed;
    display: inline-block;
    top: 20%;
    left: 50%;
    transform: translate(-50%);
    width: 420px;
    padding-bottom: 10px;
    border: 1px solid #ebeef5;
    font-size: 18px;
    box-shadow: 0 2px 12px 0 rgba(0,0,0,.1);
    text-align: left;
    overflow: hidden;
    backface-visibility: hidden;
    background-color: #fff;
}

.logout-header{
    position: relative;
    padding: 15px 15px 10px;
    
}

.logout-header__title{
    padding-left: 0;
    margin-bottom: 0;
    font-size: 20px;
    line-height: 1;
    color: #303133;
}

.logout-header__button{
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 16px;
    cursor: pointer;
}

.logout-content{
    padding: 10px 15px;
    color: #606266;
    font-size: 20px;
}

.logout-content-container{
    position: relative;
}

.logout-content-message{
    padding-left: 36px;
    padding-right: 12px;
}

.logout-content-message>p{
    margin: 0;
    line-height: 24px;
}

.logout-btns{
    padding: 5px 15px 0;
    text-align: right;
}

.logout-btns> button {
    width: 56px;
    height: 32px;
    border: 1px solid #dcdfe6;
    color: #606266;
    background: #fff;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    font-weight: 500;
    outline: none;
}

.logout-btns button:nth-child(2){
    margin-left: 10px;
    color: #fff;
    background-color: #409eff;
    border-color: #409eff;
}

